Amazing. Right there on a plain old marker buoy, a whole little colony. Seaweeds, a couple of different kinds of little fish (in addition to the little striped ones, there's a very friendly little brown one - or maybe more like an in-your-face little brown one, keeps popping into view just inches away from my face mask - at about an inch and a half long, though, this isn't too bothersome), and I think the pink thing is of the sponge family.